using System;

using System.Collections.Generic;

using ModuleManager.Extensions;

using ModuleManager.Logging;

using ModuleManager.Patches.PassSpecifiers;

using ModuleManager.Progress;

namespace ModuleManager.Patches

{

public class DeletePatch : IPatch

{

public UrlDir.UrlConfig UrlConfig { get; }

public INodeMatcher NodeMatcher { get; }

public IPassSpecifier PassSpecifier { get; }

public bool CountsAsPatch => true;

public DeletePatch(UrlDir.UrlConfig urlConfig, INodeMatcher nodeMatcher, IPassSpecifier passSpecifier)

{

UrlConfig = urlConfig ?? throw new ArgumentNullException(nameof(urlConfig));

NodeMatcher = nodeMatcher ?? throw new ArgumentNullException(nameof(nodeMatcher));

PassSpecifier = passSpecifier ?? throw new ArgumentNullException(nameof(passSpecifier));

}

public void Apply(LinkedList<IProtoUrlConfig> databaseConfigs, IPatchProgress progress, IBasicLogger logger)

{

if (databaseConfigs == null) throw new ArgumentNullException(nameof(databaseConfigs));

if (progress == null) throw new ArgumentNullException(nameof(progress));

if (logger == null) throw new ArgumentNullException(nameof(logger));

LinkedListNode<IProtoUrlConfig> currentNode = databaseConfigs.First;

while (currentNode != null)

{

IProtoUrlConfig protoConfig = currentNode.Value;

try

{

LinkedListNode<IProtoUrlConfig> nextNode = currentNode.Next;

if (NodeMatcher.IsMatch(protoConfig.Node))

{

progress.ApplyingDelete(protoConfig, UrlConfig);

databaseConfigs.Remove(currentNode);

}

currentNode = nextNode;

}

catch (Exception ex)

{

progress.Exception(UrlConfig, $"Exception while applying delete {UrlConfig.SafeUrl()} to {protoConfig.FullUrl}", ex);

}

}

}

}

}